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Multiple Choice
At what temperature does pure water boil at standard atmospheric pressure, expressed in kelvin?
A
298 K
B
273 K
C
212 K
D
373 K
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Verified step by step guidance
1
Recall that the boiling point of a substance is the temperature at which its vapor pressure equals the external pressure. For water at standard atmospheric pressure (1 atm), this is a well-known physical property.
Understand that standard atmospheric pressure is defined as 1 atm, which is the pressure at sea level.
Recognize that the boiling point of pure water at 1 atm is commonly given as 100 degrees Celsius.
Convert the boiling point from degrees Celsius to kelvin using the formula: \(T(K) = T(^\circ C) + 273.15\).
Apply the conversion to 100 degrees Celsius to find the boiling point in kelvin, which will give the temperature at which pure water boils at standard atmospheric pressure.